Pramet Turning Insert, TPMR Insert, 321 Insert, Triangular, 4 mm Maximum Depth of Cut, 9.525 mm Inscribed Circle, 1/8 in Thickness, 16.5 mm Length, 16 Seat, Positive Rake, 47 Chipbreaker, 0.4 mm Corner Radius, Manufacturers Grade: T9325, ANSI Code: TPMR 321-47 T9325, ISO Code: TPMR 160304E-47 T9325, 60 deg Included Angle, 11 deg Relief Angle, Carbide, Material Grade: K, M, P, S, For Use On: Cast Iron, Stainless Steel, Steel and Titanium/Super Alloys